Halo 4 - So much fun to play, and there was never a moment of frustration. Sheer laughs were always had, especially with friends. From Regicide, to Flood everything competitive about Halo 4 was enjoyable. The armor unlocks, the specializations, and even the load-out system were done right and made for a rewarding experience. I love unlocks, and Halo 4 did something right with the unlock system and everything else in between.